In China, our company is only one has independent intellectual property rights of hollow glass microspheres (HGM) with high performance and high compressive strength. The Industrialization of HGM has been achieved. Our target is to replace similar imported products. The annual production capacity of 25 thousand tons. HGM is a kind of ultra-lightweight inorganic non-metallic material with hollow structure. The ingredient is soda lime borosilicate. Its true density is 0.20-0.60g/cm3. It owns features with light weight, large bulky, low thermal conductivity, high compressive strength, smoothly mobility etc. HGM is an excellent filler in composite materials.